Semnan University International Journal of Nonlinear Analysis and Applications 2008-6822 14 7 2023 07 01 Existence and controllability for non-instantaneous impulsive stochastic integro-differential equations with noncompact semigroups 1 19 7832 10.22075/ijnaa.2023.29065.4055 EN Melati Oussama Laboratory of Mathematics, Modeling and Applications (LaMMA), University of Adrar, ,Algeria Slama Abdeldjalil Laboratory of Mathematics, Modeling and Applications (LaMMA), University of Adrar, Algeria Ouahab Abdelghani‬ Laboratory of Mathematics. University of Sidi-Bel-Abbes, Algeria Journal Article 2022 11 22 This paper deals with the existence and exact controllability of a class of non-instantaneous impulsive stochastic integro-differential equations with nonlocal conditions in a Hilbert space under the assumption that the semigroup generated by the linear part is noncompact.  A set of sufficient conditions are generated using the stochastic analysis technique,   Kuratowskii's measure of non-compactness, a resolvent operator and a generalized Darbo's fixed point theorem to obtain existence and controllability results of mild solutions for the considered system. Examples are also given to illustrate the effectiveness of controllability results obtained. https://ijnaa.semnan.ac.ir/article_7832_a5c8b1bdff7b8220c47bc6f6e1c9591a.pdf